Fluid Dynamics Research On Supersonic Aircraft
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Fluid Dynamics Research On Supersonic Aircraft
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Author : North Atlantic Treaty Organization. Research and Technology Organization
language : en
Publisher:
Release Date : 1998
Fluid Dynamics Research On Supersonic Aircraft written by North Atlantic Treaty Organization. Research and Technology Organization and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Aerodynamics, Supersonic categories.
Contains the lecture notes prepared for a Special Course on Fluid Dynamics Research on Supersonic Aircraft organized by the RTO Applied Vehicle Technology Panel (AVT). The Course was held at the von Kármán Institute for Fluid Dynamics (VKI) Institute, Rhode-Saint-Genèse, Belgium 25-29 May 1998. The following topics were covered: History & Economics of Supersonic Transports, Supersonic Aerodynamics, Sonic Boom Theory and Minimization, Multi-Point Design Challenges, Vortex Plume Interactions, Propulsion System Design. Presentations on the major world wide supersonic transport programs were also included. The material assembled in this publication was prepared under the combined sponsorship of the RTO Applied Vehicle Technology Panel, the Consultant and Exchange Program of RTO, and the von Kármán Institute (VKI) for Fluid Dynamics.
Cfd Analysis Of Nozzle Jet Plume Effects On Sonic Boom Signature
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Author : National Aeronautics and Space Adm Nasa
language : en
Publisher: Independently Published
Release Date : 2019-01-14
Cfd Analysis Of Nozzle Jet Plume Effects On Sonic Boom Signature written by National Aeronautics and Space Adm Nasa and has been published by Independently Published this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-01-14 with Science categories.
A computational fluid dynamics study is conducted to examine nozzle exhaust jet plume effects on the Sonic boom signature of a supersonic aircraft. A simplified axisymmetric nozzle geometry, representative of the nozzle on the NASA Dryden NF-15B Lift and Nozzle Change Effects on Tail Shock research airplane, is considered. The computational fluid dynamics code is validated using available wind-tunnel sonic boom experimental data. The effects of grid size, spatial order of accuracy. grid type, and flow viscosity on the accuracy of the predicted sonic boom pressure signature are quantified. Grid lines parallel to the Mach wave direction are found to give the best results. Second-order accurate upwind methods are required as a minimum for accurate sonic boom simulations. The highly underexpanded nozzle flow is found to provide significantly more reduction in the tail shock strength in the sonic boom N-wave pressure signature than perfectly expanded and overexpanded nozzle flows. A tail shock train in the sonic boom signature is observed for the highly underexpanded nozzle flow. Axisymmetric computational fluid dynamics simulations show the flow physics inside the F-15 nozzle to be nonisentropic and complex. NASA/TM-2009-214650, AIAA Paper 2009-1054, H-2923, DFRC-938 Bui, Trong T. Armstrong Flight Research Center
The High Temperature Aspects Of Hypersonic Flow
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Author : Wilbur C. Nelson
language : en
Publisher: Elsevier
Release Date : 2014-12-02
The High Temperature Aspects Of Hypersonic Flow written by Wilbur C. Nelson and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-12-02 with Science categories.
The High Temperature Aspects of Hypersonic Flow is a record of the proceedings of the AGARD-NATO Specialists' Meeting, held at the Technical Centre for Experimental Aerodynamics, Rhode-Saint-Genese, Belgium in April 1962. The book contains the papers presented during the meeting that tackled a broad range of topics in the aspects of hypersonic flow. The subjects covered during the meeting include pressure measurements, interference effects, the use of wind tunnels in aircraft development testing, high temperature gas characteristics, boundary layer research, stability and control and the use of rocket vehicles in flight research. Aerospace engineers and aeronautical engineers will find the book invaluable.
Aerodynamics Principles For Air Transport Pilots
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Author : Rose G Davies
language : en
Publisher: CRC Press
Release Date : 2020-04-13
Aerodynamics Principles For Air Transport Pilots written by Rose G Davies and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-04-13 with Technology & Engineering categories.
Equipping readers with the ability to analyze the aerodynamic forces on an aircraft, the book provides comprehensive knowledge of the characteristics of subsonic and supersonic airflow. This book begins with the fundamental physics principles of aerodynamics, then introduces the Continuity Equation, Energy Equations, and Bernoulli’s Equation, which form the basic aerodynamic principles for subsonic airflow. It provides a thorough understanding of the forces acting on an aircraft across a range of speeds and their effects on the aircraft's performance, including a discussion on the difference in aerofoil and aircraft shapes. Aircraft stability issues are analyzed, along with the development of a boundary layer over an aerofoil, the changes of air speed and air pressure, and boundary layer separation. Readers will gain a clear understanding of the nature of airflow over aircraft during subsonic, transonic, and supersonic flight. The book emphasizes the connection between operating actions in flight and aerodynamic requirements. The content will be of interest to senior undergraduates studying to obtain their Airline Transport Pilot License (ATPL)/Airline Transport Pilot (ATP) certificate, general aviation and air transport pilots, and aircraft maintenance engineers.
Introduction To Transonic Aerodynamics
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Author : Roelof Vos
language : en
Publisher: Springer
Release Date : 2015-03-04
Introduction To Transonic Aerodynamics written by Roelof Vos and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-04 with Technology & Engineering categories.
Written to teach students the nature of transonic flow and its mathematical foundation, this book offers a much-needed introduction to transonic aerodynamics. The authors present a quantitative and qualitative assessment of subsonic, supersonic and transonic flow around bodies in two and three dimensions. The book reviews the governing equations and explores their applications and limitations as employed in modeling and computational fluid dynamics. Some concepts, such as shock and expansion theory, are examined from a numerical perspective. Others, including shock-boundary-layer interaction, are discussed from a qualitative point of view. The book includes 60 examples and more than 200 practice problems. The authors also offer analytical methods such as Method of Characteristics (MOC) that allow readers to practice with the subject matter. The result is a wealth of insight into transonic flow phenomena and their impact on aircraft design, including compressibility effects, shock and expansion waves, shock-boundary-layer interaction and aeroelasticity.
Prediction And Validation Technologies Of Aerodynamic Force And Heat For Hypersonic Vehicle Design
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Author : Min Zhao
language : en
Publisher: Springer Nature
Release Date : 2021-03-01
Prediction And Validation Technologies Of Aerodynamic Force And Heat For Hypersonic Vehicle Design written by Min Zhao and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-03-01 with Technology & Engineering categories.
This book provides an overview of advanced prediction and verification technologies for aerodynamics and aerothermodynamics and assesses a number of critical issues in advanced hypersonic vehicle design. Focusing on state-of-the-art theories and promising technologies for engineering applications, it also presents a range of representative practical test cases. Given its scope, the book offers a valuable asset for researchers who are interested in thermodynamics, aircraft design, wind tunnel testing, fluid dynamics and aerothermodynamics research methods, introducing them to inspiring new research topics.
A General Theory Of Fluid Mechanics
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Author : Peiqing Liu
language : en
Publisher: Springer Nature
Release Date : 2021-04-01
A General Theory Of Fluid Mechanics written by Peiqing Liu and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-04-01 with Technology & Engineering categories.
This book provides a general introduction to fluid mechanics in the form of biographies and popular science. Based on the author’s extensive teaching experience, it combines natural science and human history, knowledge inheritance and cognition law to replace abstract concepts of fluid mechanics with intuitive and understandable physical concepts. In seven chapters, it describes the development of fluid mechanics, aerodynamics, hydrodynamics, computational fluid dynamics, experimental fluid dynamics, wind tunnel and water tunnel equipment, the mystery of flight and aerodynamic principles, and leading figures in fluid mechanics in order to spark beginners’ interest and allow them to gain a comprehensive understanding of the field’s development. It also provides a list of references for further study.
Theoretical And Experimental Aerodynamics
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Author : Mrinal Kaushik
language : en
Publisher: Springer
Release Date : 2018-12-15
Theoretical And Experimental Aerodynamics written by Mrinal Kaushik and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-12-15 with Technology & Engineering categories.
This book is intended as a text for undergraduate and graduate courses in aerodynamics, typically offered to students of aerospace and mechanical engineering programs. It covers all aspects of aerodynamics. The book begins with a description of the standard atmosphere and basic concepts, then moves on to cover the equations and mathematical models used to describe and characterize flow fields, as well as their thermodynamic aspects and applications. Specific emphasis is placed on the relation between concepts and their use in aircraft design. Additional topics of interest to the reader are presented in the Appendix, which draws on the teachings provided in the text. The book is written in an easy to understand manner, with pedagogical aids such as chapter overviews, summaries, and descriptive and objective questions to help students evaluate their progress. Atmospheric and gas tables are provided to facilitate problem solving. Lastly, a detailed bibliography is included at the end of each chapter to provide students with further resources. The book can also be used as a text for professional development courses in aerodynamics.
A Supersonic Argon Air Coaxial Jet Experiment For Computational Fluid Dynamics Code Validation
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Author : National Aeronaut Administration (Nasa)
language : en
Publisher:
Release Date : 2020-08-18
A Supersonic Argon Air Coaxial Jet Experiment For Computational Fluid Dynamics Code Validation written by National Aeronaut Administration (Nasa) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-08-18 with categories.
A non-reacting experiment is described in which data has been acquired for the validation of CFD codes used to design high-speed air-breathing engines. A coaxial jet-nozzle has been designed to produce pressure-matched exit flows of Mach 1.8 at 1 atm in both a center jet of argon and a coflow jet of air, creating a supersonic, incompressible mixing layer. The flowfield was surveyed using total temperature, gas composition, and Pitot probes. The data set was compared to CFD code predictions made using Vulcan, a structured grid Navier-Stokes code, as well as to data from a previous experiment in which a He-O2 mixture was used instead of argon in the center jet of the same coaxial jet assembly. Comparison of experimental data from the argon flowfield and its computational prediction shows that the CFD produces an accurate solution for most of the measured flowfield. However, the CFD prediction deviates from the experimental data in the region downstream of x/D = 4, underpredicting the mixing-layer growth rate. Clifton, Chandler W. and Cutler, Andrew D. Langley Research Center NASA/CR-2007-214866 COMPUTATIONAL FLUID DYNAMICS; SUPERSONIC SPEED; AIR BREATHING ENGINES; MIXING LAYERS (FLUIDS); FLOW DISTRIBUTION; GAS COMPOSITION; ARGON; AIR JETS; TEMPERATURE PROBES; OXYGEN
The Aeroacoustics Of Supersonic Coaxial Jets
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-23
The Aeroacoustics Of Supersonic Coaxial Jets written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-23 with categories.
Instability waves have been established as the dominant source of mixing noise radiating into the downstream arc of a supersonic jet when the waves have phase velocities that are supersonic relative to ambient conditions. Recent theories for supersonic jet noise have used the concepts of growing and decaying linear instability waves for predicting radiated noise. This analysis is extended to the prediction of noise radiation from supersonic coaxial jets. Since the analysis requires a known mean flow and the coaxial jet mean flow is not described easily in terms of analytic functions, a numerical prediction is made for its development. The Reynolds averaged, compressible, boundary layer equations are solved using a mixing length turbulence model. Empirical correlations are developed for the effects of velocity and temperature ratios and Mach number. Both normal and inverted velocity profile coaxial jets are considered. Comparisons with measurements for both single and coaxial jets show good agreement. The results from mean flow and stability calculations are used to predict the noise radiation from coaxial jets with different operating conditions. Comparisons are made between different coaxial jets and a single equivalent jet with the same total thrust, mass flow, and exit area. Results indicate that normal velocity profile jets can have noise reductions compared to the single equivalent jet. No noise reductions are found for inverted velocity profile jets operated at the minimum noise condition compared to the single equivalent jet. However, it is inferred that changes in area ratio may provide noise reduction benefits for inverted velocity profile jets. Dahl, Milo D. Glenn Research Center AEROACOUSTICS; COAXIAL FLOW; GAS JETS; JET AIRCRAFT NOISE; NOISE PREDICTION (AIRCRAFT); NOISE REDUCTION; SUPERSONIC JET FLOW; COMPUTATIONAL FLUID DYNAMICS; FLOW STABILITY; MACH NUMBER; MIXING LENGTH FLOW THEORY; TEMPERATURE RATIO; VELOCITY DISTRIBUTION...